Python and data processing test

What is the result of the following expression multiplying an integer with a float?

5*1.5

• 5

• 10

• 7.5

• 7

What is the result of the expression?

5*1.0

• 5

• 5.0

• An error

What is the result of the next expression?

"V"+1

• The value of the variable V plus 1

• "V1"

• An error

What is the result of the expression?

3*[1, 2, 3]

• [3, 6, 9]

• [ [1, 2, 3], [1, 2, 3], [1, 2, 3] ]

• [1, 2, 3, 1, 2, 3, 1, 2, 3, ]

• An error

Assume that we have a list variable:lst=[1,2,3,4]

How can we add the value 5 to the end of the list?

• lst.add(5)

• lst.append(5)

• 5.add(lst)

• 5.append(lst)

The v[4]='c' statement can work if the type of the v variable is:

• string

• list

• tuple

What will write the following code to the output?

for i in range(1,10):

print(i*i)

• 1

  4

  9

  16

  25

  36

  49

  64

  81

• 1

  4

  9

  16

  25

  36

  49

  64

  81

  100

• Nothing

• An error

What will we get on the output with the following code?

print([ i*i for i in range(1,10) ])

• [1, 4, 9, 16, 25, 36, 49, 64, 81]

• [1, 4, 9, 16, 25, 36, 49, 64, 81, 100]

• Nothing

• An error

What can we do in the Python list comprehension using the if keyword with condition?

• Filtering, controlling what will be included in the result

• Conditional output elements, using if for conditional expression

• Both filtering and conditional expression

What can't we ask for in a Python dictionary?

• A value indexed by a key

• A key indexed by a value